JP2019032637A - Display device - Google Patents

Abstract

To counter both stripe irregularity and Moire on a liquid crystal display device having a touch panel function.SOLUTION: In a display device having a metal wire for a touch panel on a display surface side, the metal wire has a shape in which four line segments are formed continuously as a quadrangular, at least two line segments are placed spaced away from other two line segments at a cross point region where two pieces of quadrangular are connected.SELECTED DRAWING: Figure 8

Description

  The present invention relates to a display device, and more particularly to a display device combined with a touch panel function.

In recent years, devices that require a display device that combines touch panel functions, such as smartphones and tablet PCs, are increasing. The touch panel is manufactured separately from the display device, and there is a touch panel that is formed later as a part of the display device, such as a so-called in-cell touch panel, which is combined later, or any touch panel. If so, it has a Tx (transmitter) electrode as a drive electrode and an Rx (receiver) electrode as a detection electrode.
As a material used for the conventional Rx electrode, a transparent oxide conductive film such as ITO (Indium Tin Oxide) has been used so as not to stand out.

However, since the transparent oxide conductive film has a high electric resistance, the transmission speed of the signal is slow, and when used for a touch panel, the response speed is affected particularly in a large-sized panel. For this reason, in order to ensure sufficient response speed, metal has come to be used as the Rx electrode and wiring of the touch panel.
However, since the metal is opaque, it is necessary to devise the wiring arrangement so as not to stand out.

  Patent Document 1 describes an example in which the wiring for the Rx electrode of the touch panel is formed in a zigzag shape. Patent Document 2 describes an example in which the wiring for the Rx electrode of the touch panel is meshed.

JP 2014-191650 A Japanese Patent Laying-Open No. 2015-232819

  Each of the Rx electrode wirings described in Patent Document 1 and Patent Document 2 has a typical shape, but has a unique phenomenon in appearance.

In the case of the zigzag shape, as shown in FIG. 14, a plurality of Rx electrode wirings 1 extend in the X direction and are arranged in the Y direction. The wiring 1 is formed by repeatedly forming an oblique wiring in the X direction while changing the angle. For this reason, there is a phenomenon in which only the diagonal wiring at one angle can be seen when the light hits the display device from the lower left side (FIG. 15A) and when the light hits the lower right side (FIG. 15B). An arrow I in FIG. 15A and an arrow II in FIG. 15B indicate the direction in which light strikes.
FIG. 16 is a cross-sectional view of the wiring 1 constituting the first electrode Rx. The width mw of the wiring 1 is 4 μm, for example. The wiring 1 is composed of four layers. The lower layer R1 (base metal) is made of, for example, Mo and has a thickness of, for example, 10 nm. An Al alloy layer R2 containing Al as a main component is formed thereon, and the thickness is, for example, 250 nm. A cap metal R3 is formed of, for example, Mo on the Al alloy layer R2, and the thickness thereof is, for example, 30 μm. On the cap metal R3, an antireflection layer R4 made of, for example, IGO (indium, gallium, oxide) is formed with a thickness of, for example, 100 nm. Since the wiring 1 is formed to be relatively thick and the side surface of the wiring 1 is formed with a forward taper, reflection of external light is likely to occur as shown in FIG. In FIG. 16, IL indicates external light, and RL indicates reflected light. Since only a specific portion of the wiring 1 is visible depending on the angle at which the reflected light RL is viewed, the phenomenon shown in FIGS. 15A and 15B occurs. In this case, the portion where the reflected light RL can be seen appears as a vertical line streak extending in the Y direction.

  On the other hand, in the case of a mesh-shaped Rx electrode, even if light hits from the lower left and the lower right, as shown in FIGS. 17A and 17B, a continuous linear array is obtained. For this reason, when viewed from the entire display device, since it is not recognized as a vertical line, the phenomenon of reflection streaking does not occur. However, another phenomenon occurs in the mesh shape.

  FIG. 18 is a plan view showing a state in which the display device is overlapped with the Rx electrode wiring 1 formed in a mesh shape. Here, the display device will be described using an example of a liquid crystal display panel.

  In FIG. 18, on the TFT substrate of the liquid crystal display panel, the scanning line 10 extends in the horizontal direction, the video signal line 20 extends in the vertical direction, and is surrounded by the scanning line 10 and the video signal line 20. A pixel 30 is formed on the top. The size of each mesh formed by the wiring 1 is larger than the size of each pixel 30. As shown in FIG. 18, there are pixels 30 that do not overlap with the wiring 1.

  FIG. 19 is an enlarged view for explaining this. FIG. 19 is a plan view showing a state in which the wiring 1 and the pixel 30 overlap each other. The number (n, m) in the pixel 30 in FIG. 19 indicates the position of the pixel. In FIG. 19, the central pixel (2, 2) that overlaps the intersection of the wiring 1 has a large area covered by the wiring 1, so the aperture ratio decreases, and the luminance of this pixel decreases. The pixels (2, 1) and (2, 3) on both sides of the center are lighter than the pixel (2, 2) because they partially overlap the two lines 1. The four corner pixels (1, 1), (1, 3), (3, 1), (3, 3) are slightly brighter than the pixel (2, 1) and the like because only one line overlaps the wiring 1. Become. On the other hand, since the upper and lower pixels (1, 2) and (3, 2) do not overlap with the wiring 1, this pixel looks brightest.

FIG. 20 is a plan view showing the luminance of each pixel based on this result. It can be seen that, among the pixels shown in FIG. 20, the luminance of each pixel differs depending on how the wiring 1 overlaps. Since the Rx electrode wiring 1 is continuously formed in a mesh shape, a luminance pattern as shown in FIG. 20 appears periodically. FIG. 21 shows a display example when such moire occurs. In this case, even if the display device performs monochromatic display on the entire screen, a display area having a different luminance as indicated by reference numeral 60 periodically appears, and this luminance pattern causes a phenomenon that is recognized as moire on the entire screen. .
An object of the present invention is to reduce the phenomenon of both reflection streaks and moire and realize an improvement in image quality in a display device having a touch panel function configured as described above.

  The present invention solves the above-mentioned problems, and main specific means are as follows.

  A display device having a touch panel metal line on the display surface side, wherein the metal line has a shape in which four line segments are continuously formed as a quadrilateral shape, and in an intersection region where the quadrangular shapes are connected to each other The display device is characterized in that at least two line segments are arranged apart from the other two line segments.

1 is an exploded perspective view of a liquid crystal display device according to the present invention. It is a perspective view of a liquid crystal display panel. It is sectional drawing of the IPS system liquid crystal display panel which has a touch-panel function. It is a schematic plan view which shows the structure of the 2nd electrode for touchscreens in a TFT substrate. It is an enlarged plan view which shows the structure of the 2nd electrode for touchscreens in a TFT substrate. It is a schematic plan view which shows the structure of the 1st electrode for touchscreens in the outer side of a counter substrate. It is a top view which shows the structure of the 1st electrode for touchscreens in the outer side of a counter substrate. It is a detailed top view of the 1st electrode by this invention. It is a detailed top view of the dummy mesh electrode by this invention. It is a perspective view which shows the function of this invention. It is a top view which shows the effect of this invention. 6 is a plan view showing a configuration of a first electrode in Example 2. FIG. 6 is a plan view showing a configuration of a second electrode in Example 2. FIG. It is an example of a zigzag-shaped Rx electrode wiring. It is an example of the reflected light when light hits the Rx electrode wiring of FIG. 14 from the screen lower left. It is an example of the reflected light when light hits the Rx electrode wiring of FIG. It is sectional drawing of Rx electrode wiring. It is an example of reflected light when light hits the mesh-shaped Rx electrode wiring from the lower left of the screen. It is an example of reflected light when light hits a mesh-shaped Rx electrode wiring from the lower right of the screen. FIG. 6 is a diagram in which a mesh-shaped Rx electrode wiring and a pixel region are superimposed. It is a top view explaining the cause of moire. It is a top view explaining the cause of moire. It is a figure which shows the visual recognition example of a moire.

  The contents of the present invention will be described in detail below using examples. In this embodiment, a liquid crystal display device will be described as an example.

  FIG. 1 is an exploded perspective view showing an example of a liquid crystal display device according to the present invention. FIG. 1 shows a liquid crystal display panel for display having a touch panel function. In FIG. 1, a counter substrate 200 is disposed on a TFT substrate 100, and an Rx electrode (first electrode) for detection for a touch panel is formed on the outside (display surface side) of the counter substrate 200. A protective film 210 made of a transparent organic material such as acrylic is formed so as to cover the first electrode. An upper polarizing plate 220 is disposed so as to cover the protective film 210. A cover glass 240 is disposed so as to cover the upper polarizing plate 220. Although not shown in FIG. 1, a lower polarizing plate is disposed below the TFT substrate 100, and a backlight (not shown) is further disposed.

  In FIG. 1, a touch panel flexible wiring substrate 230 is attached to an end of the counter substrate in order to connect to the first electrode formed outside the counter substrate. In order to make the liquid crystal display panel of FIG. 1 function as a touch panel, the common electrode formed on the TFT substrate 100 of the liquid crystal display panel is patterned to have the function of a driving Tx electrode (second electrode). Yes. Such a touch panel configuration is called an in-cell method.

  In FIG. 1, the TFT substrate 100 is formed larger than the counter substrate 200, and a portion where the TFT substrate 100 does not overlap the counter substrate 200 is a terminal portion 150, and a driver IC 160 is mounted on this portion. A main flexible wiring board is connected to the terminal portion 150 in order to supply signals and power to the liquid crystal display device, but is omitted in FIG. In FIG. 1, the lateral direction, that is, the direction orthogonal to the terminal side is the y-axis, and the direction parallel to the terminal side is the x-axis.

  FIG. 2 is a perspective view of a liquid crystal display panel including a TFT substrate 100 and a counter substrate 200 in the liquid crystal display device of FIG. In this specification, a combination of the TFT substrate 100 and the counter substrate 200 is referred to as a liquid crystal display panel, but this may be referred to as a liquid crystal display device. The thickness of the TFT substrate 100 in FIG. 2 is, for example, 0.15 mm, and the thickness of the counter substrate 200 is 0.15 mm.

  In FIG. 2, a counter substrate 200 is bonded onto a TFT substrate 100 by a sealing material 70, and liquid crystal is sealed between the substrates. A region surrounded by the sealing material 70 is a display region 500. A first electrode Rx for a touch panel is formed outside the counter substrate 200, and a second electrode Tx for a touch panel is formed inside the TFT substrate 100 by patterning the common electrode. In FIG. 2, the direction parallel to the terminal side is the x-axis, and the direction orthogonal to the terminal side is the y-axis. The same applies to the following drawings.

  FIG. 3 is a cross-sectional view of the display area of the liquid crystal display panel of FIG. FIG. 3 is a cross-sectional view of an IPS liquid crystal display device. Hereinafter, an IPS (In Plane Switching) type liquid crystal display device will be described as an example. However, the present invention is not limited to the IPS method, and can be applied to other liquid crystal display devices such as VA and TN.

  In FIG. 3, a first base film 101 made of silicon nitride (SiN) and a second base film 102 made of silicon oxide (SiO) are formed on a glass substrate 100 by CVD (Chemical Vapor Deposition). In some cases, the SiN layer and the SiO layer are reversed. The role of the first base film 101 and the second base film 102 is to prevent impurities from the glass substrate 100 from contaminating the semiconductor layer 103.

  A semiconductor layer 103 is formed on the second base film 102. The semiconductor layer 103 is obtained by forming an a-Si film on the second base film 102 by CVD, and converting it into a poly-Si film by laser annealing. The poly-Si film is patterned by photolithography.

  A gate insulating film 104 is formed on the semiconductor layer 103. The gate insulating film 104 is a SiO film made of TEOS (tetraethoxysilane). This film is also formed by CVD. A gate electrode 105 is formed thereon. The gate electrode 105 also serves as the scanning line 10 shown in FIG. The gate electrode 105 is formed of, for example, a MoW (molybdenum-tungsten) film. When it is necessary to reduce the resistance of the gate electrode 105 or the scanning line, an Al (aluminum) alloy is used.

  The gate electrode 105 is patterned by photolithography. During this patterning, an impurity such as phosphorus or boron is doped into the poly-Si layer by ion implantation, and the source S or drain D is formed in the poly-Si layer. Form. Further, an LDD (Lightly Doped Drain) layer is formed between the channel layer of the poly-Si layer and the source S or the drain D using a photoresist when patterning the gate electrode 105.

  Thereafter, a first interlayer insulating film 106 is formed of SiO so as to cover the gate electrode 105. The first interlayer insulating film 106 is for insulating the gate wiring 105 and the contact electrode 107. A through hole 120 for connecting the source portion S of the semiconductor layer 103 to the contact electrode 107 is formed in the first interlayer insulating film 106 and the gate insulating film 104. Photolithography for forming the through hole 120 in the first interlayer insulating film 106 and the gate insulating film 104 is performed simultaneously.

  A contact electrode 107 is formed on the first interlayer insulating film 106. The contact electrode 107 is connected to the pixel electrode 112 through the through hole 130. The drain D of the TFT is connected to the video signal line 20 shown in FIG.

  The contact electrode 107 and the video signal line are formed in the same layer at the same time. For the contact electrode 107 and the video signal line (hereinafter represented by the contact electrode 107), for example, an AlSi alloy is used to reduce the resistance. Since the AlSi alloy generates hillocks or Al diffuses to other layers, for example, a structure is adopted in which AlSi is sandwiched between a barrier layer made of MoW (not shown) and a cap layer.

  An inorganic passivation film (insulating film) 108 is formed covering the contact electrode 107 to protect the entire TFT. The inorganic passivation film 108 is formed by CVD in the same manner as the first base film 101. An organic passivation film 109 is formed so as to cover the inorganic passivation film 108. The organic passivation film 109 is made of a photosensitive acrylic resin. The organic passivation film 109 can be formed of silicone resin, epoxy resin, polyimide resin, or the like in addition to acrylic resin. Since the organic passivation film 109 has a role as a planarizing film, it is formed thick. The film thickness of the organic passivation film 109 is 1 to 4 μm, but in the case of a liquid crystal display device incorporating a touch panel function, in many cases, it is 2 μm to 4 μm.

  In order to establish conduction between the pixel electrode 112 and the contact electrode 107, a through hole 130 is formed in the inorganic passivation film 108 and the organic passivation film 109. The organic passivation film 109 uses a photosensitive resin. When this resin is exposed after application of a photosensitive resin, only the portion exposed to light is dissolved in a specific developer. That is, the formation of a photoresist can be omitted by using a photosensitive resin. After the through-hole 130 is formed in the organic passivation film 109, the organic passivation film 109 is completed by baking the organic passivation film at about 230 ° C.

  Thereafter, ITO (Indium Tin Oxide) to be the common electrode 110 is formed by sputtering. The common electrode 110 is continuously formed over a plurality of pixels, but is removed from the through hole 130 and the surrounding area. Moreover, since the common electrode 110 is used as the second electrode Tx in the touch panel, it is patterned as will be described later.

  Thereafter, SiN to be the second interlayer insulating film 111 is formed on the entire surface by CVD. Thereafter, a through hole is formed in the second interlayer insulating film 111 and the inorganic passivation film 108 in order to make the contact electrode 107 and the pixel electrode 112 conductive in the through hole 130.

  Thereafter, ITO is formed by sputtering and patterned to form the pixel electrode 112. An alignment film material is applied on the pixel electrode 112 by flexographic printing or inkjet, and is baked to form the alignment film 113. For the alignment treatment of the alignment film 113, photo-alignment using polarized ultraviolet rays is used in addition to the rubbing method.

  When a voltage is applied between the pixel electrode 112 and the common electrode 110, electric lines of force as shown in FIG. 3 are generated. The liquid crystal molecules 301 are rotated by this electric field, and an image is formed by controlling the amount of light passing through the liquid crystal layer 300 for each pixel.

  In FIG. 3, the counter substrate 200 is disposed with the liquid crystal layer 300 interposed therebetween. A color filter 201 is formed inside the counter substrate 200. The color filter 201 is formed with red, green, and blue color filters for each pixel, thereby forming a color image. A black matrix 202 is formed between the color filter 201 and the color filter 201 to suppress color mixture and reflected light caused by a superimposed video signal line. Note that the black matrix 202 also has a role as a light shielding film of the TFT, and prevents a photocurrent from flowing through the TFT.

  An overcoat film 203 is formed to cover the color filter 201 and the black matrix 202. Since the surfaces of the color filter 201 and the black matrix 202 are uneven, the surfaces are smoothed by the overcoat film 203. An alignment film 113 for determining the initial alignment of the liquid crystal is formed on the overcoat film. Similar to the alignment film 113 on the TFT substrate 100 side, the rubbing method or the photo-alignment method is used for the alignment process of the alignment film 113.

  A first electrode Rx for causing the liquid crystal display panel to function as a touch panel is formed outside the counter electrode 200. As shown in FIG. 3, a capacitance 250 is formed between the first electrode Rx formed outside the counter substrate 200 and the second electrode Tx shared by the common electrode 110 formed on the TFT substrate 100. However, the touch position is detected by detecting the change in the capacitance 250.

  Since the first electrode Rx in the present embodiment is made of metal, a protective film 210 is formed to cover the first electrode Rx in order to prevent corrosion. The protective film 210 has a configuration in which an organic film is laminated on an organic film such as acrylic or an inorganic film such as SiN.

  FIG. 4 is a plan view of the TFT substrate 100. A scanning line, a video signal line, and the like are formed on the TFT substrate, but are omitted in FIG. In FIG. 4, second electrodes Tx, which are one electrode of the touch panel, extend in the y direction and are arranged in the x direction with a period xp. The second electrode Tx is formed by patterning the common electrode 110 formed on the TFT substrate 100.

  FIG. 5 is an enlarged plan view showing the configuration of the second electrode Tx in FIG. In FIG. 5, the scanning lines 10 extend in the horizontal direction (x direction) and are arranged in the vertical direction (y direction). The video signal lines 20 extend in the vertical direction (y direction) and are arranged in the horizontal direction (x direction). A region surrounded by the scanning lines 10 and the video signal lines 20 is one pixel 30. In FIG. 5, the pixel electrode, the through hole, the TFT, and the like in the pixel 30 are omitted.

  In the liquid crystal display device of the IPS mode, particularly the FFS (Fringe Field Switching) mode, the common electrode 110 is continuously formed over a plurality of pixels, but in FIG. A space gx exists between the left common electrode 110 and the right common electrode 110, and the common electrodes 110 are insulated from each other. A common voltage for image display and a drive voltage Vy for touch panel are alternately applied to the common electrode 110.

  In FIG. 5, the width of each stripe constituting the common electrode 110 (second electrode Tx) is three pixels, but this can be changed according to the required resolution of the touch panel. In general, the width of each stripe is larger than three pixels.

  FIG. 6 is a plan view of the counter substrate 200. A sealing material 70 for bonding to the TFT substrate 100 is formed around the counter substrate 200. On the surface of the counter substrate 200, the first electrode Rx for the touch panel extends in the horizontal direction (x direction). In the vertical direction (y direction), they are arranged with a period yp. In addition, since no electrode for a touch panel is formed between the first electrode Rx and the first electrode Rx, there is an interval region Sx in this portion. It should be noted that the gap region Sx does not have any electrode, and a dummy electrode is formed in this portion. This is to prevent reflection streaks by making the electrodes and wiring arrangement uniform.

  FIG. 7 is a schematic configuration of the first electrode Rx. As shown in FIG. 7, one first electrode Rx is formed in a mesh shape and extends in the x direction. The first electrode Rx is connected to a control circuit for a touch panel (not shown), and together with the other first electrode Rx, the output of each first electrode Rx is sequentially scanned to detect a change in capacitance. , Detect the touch position. A dummy electrode is formed in the space region Sx sandwiched between the first electrode Rx and the first electrode Rx. The dummy electrode has a float potential.

  In FIG. 7, the vertical period yp of the first electrode Rx is different from the horizontal period xp of the second electrode Ry shown in FIGS. 4 and 5, but may be the same. Further, the vertical period pm of each mesh in FIG. 7 is, for example, about 170 μm. In FIG. 7, the number of meshes in the vertical direction is four, but the number of meshes can be increased as necessary for the touch panel function. In FIG. 7, the widths of the dummy electrodes of the first electrode Rx and the slit Sx are the same, but can be changed as necessary for the touch panel function.

  FIG. 8 is a plan view showing a detailed configuration of the first electrode Rx in the present invention. 8 is characterized in that, in the first electrode Rx, wirings extending in different directions are alternately combined, and a dummy line rmd disposed between the electrode wirings rm and a dummy line rmd disposed between the electrode wirings rm. And a pseudo mesh-like wiring configuration is formed by the electrode wiring rm and the dummy line rmd. At this time, the bending point of the electrode wiring rm and the dummy line rmd are arranged with an interval 50 therebetween. The widths w1 and w2 of the interval 50 are, for example, 5 μm.

  FIG. 9 is a plan view showing a detailed configuration of the second electrode Sx. In FIG. 9, a dummy line rd is disposed at a position corresponding to the electrode wiring rm of the first electrode Rx. The difference from the electrode wiring rm is that an interval 40 is provided in the middle of the line and it does not function electrically as a wiring. A dummy line rdd is disposed at a position corresponding to the dummy line rmd of the first electrode Rx. Similarly to the dummy line rd, the dummy line rdd is also provided with an interval 40 in the middle. Further, the dummy line rd and the dummy line rdd are also arranged at an interval of 50, which is the same as in the case of the first electrode Rx.

  10 and 11 are diagrams showing effects when the first electrode Rx of FIG. 8 is formed. FIG. 10 is a view corresponding to FIG. 14 and is a plan view showing the vicinity of the bending point of the electrode wiring rm and the pixel 30 in an overlapping manner. The number (n, m) in the pixel in FIG. 10 indicates the position of the pixel. In the central pixel (2, 2) in FIG. 10, the electrode wiring rm and the dummy line rmd are not in contact with each other, and there is an interval 50, and accordingly, an element that blocks the pixel (2, 2) is shielded. decrease. In this structure of the first embodiment, at the bend point portion of the electrode wiring rm, if the line segment of the wiring is a normal mesh shape, there are two where there are four. That is, by forming the interval 50, the luminance of the central pixel (2, 2) can be improved as compared with the case of the general mesh electrode wiring shown in FIG.

  FIG. 11 is a plan view showing the brightness of each pixel showing this result. In the case of FIG. 19, the brightness of the central pixel (2, 2) where the luminance reduction is the largest is the pixel (2, 1) on both sides of the center as shown in FIG. Since the brightness is comparable to that of (2, 3), the luminance reduction of the pixel 30 overlapping the bending point of the electrode wiring rm can be prevented, and the change in luminance with the peripheral pixel 30 is reduced, so that the entire screen is If it sees, generation | occurrence | production of a moire will be reduced.

  In addition, even if it is pseudo, the mesh shape means that there is no portion that cannot be seen in the vertical direction depending on the viewing direction, and the problem of reflection streaks is solved.

  FIG. 12 is a plan view showing the configuration of the first electrode Rx in the second embodiment of the present invention. In the present embodiment, the shape of the electrode wiring rm is the same as that in the first embodiment, but the shape of the dummy line rmd2 is different from that in the first embodiment. As shown in FIG. 12, the dummy line rmd2 has a bending point having the same angle as the bending point of the electrode wiring rm in the middle of the line, and is arranged at a position where the bending point position of the electrode wiring rm is the target. The Looking at one electrode wiring rm as a whole, the dummy line rmd2 placed around the electrode wiring rm is arranged so as to have a pseudo-symmetrical shape of the electrode wiring rm. Note that a space 50 is provided between the electrode wiring rm and the dummy line rmd2 so as not to be in direct contact with each other. The dimension of the space | interval 50 is 5 micrometers, for example.

  According to such an arrangement, when viewed from the entire display screen, the first electrode Rx has a pseudo mesh shape as in the first embodiment. Even in the example shown in the second embodiment, since the dummy lines rm are arranged at an interval at the bent position of the electrode wiring rm, similarly to the first embodiment, a reduction in the luminance of the pixel in this portion is prevented. can do.

  FIG. 13 is a plan view showing the configuration of the second electrode Sx in the present embodiment. In the case of the second electrode Sx, there is no electrode wiring rm, all of them are formed by a combination of dummy lines rmd2, and are formed in a pseudo mesh shape when viewed on the entire screen.

  Thus, also in Example 2, the same effect as Example 1 can be achieved.

  In the above description, the first electrode Rx, which is the detection electrode of the touch panel, has been described as extending in the x direction. However, the present invention can be applied even when the first electrode Rx extends in the y direction.

  In the above description, the display device is described as an example of a liquid crystal display device. However, the present invention can be applied to other display devices such as an organic EL display device.

  DESCRIPTION OF SYMBOLS 1 ... Wiring, 10 ... Scanning line, 20 ... Video signal line, 30 ... Pixel, 40 ... Spacing, 41 ... Line notch width, 50 ... Spacing, 60 ... Moire pattern, 70 ... Seal material, 100 ... TFT substrate, 101 DESCRIPTION OF SYMBOLS ... 1st base film, 102 ... 2nd base film, 103 ... Semiconductor layer, 104 ... Gate insulating film, 105 ... Gate electrode, 106 ... 1st interlayer insulating film, 107 ... Contact electrode, 108 ... Inorganic passivation film, 109 ... Organic passivation film, 110 ... Common electrode, 111 ... Second interlayer insulating film, 112 ... Pixel electrode, 113 ... Alignment film, 120 ... First through hole, 130 ... Second through hole, 150 ... Terminal part, 160 ... IC driver 200 ... Counter substrate 201 ... Color filter 202 ... Black matrix 203 ... Overcoat 210 ... Protective film, 220 ... Upper polarizing plate, 230 ... Flexible wiring substrate for touch panel, 240 ... Cover glass, 250 ... Capacity, 300 ... Liquid crystal layer, 301 ... Liquid crystal molecule, 500 ... Display area, D ... Drain part, S ... source part, Rx ... first electrode, rm ... electrode wiring, rmd ... dummy line, Tx ... second electrode, rd ... dummy line, rdd ... dummy line, R1 ... base metal, R2 ... Al alloy layer, R3 ... Cap metal, R4 ... Antireflection film, w1, w2 ... Width of node notch

Claims (12)

A display device having a touch panel metal wire on the display surface side,
A plurality of first metal wires extending in a first direction and arranged in parallel with the second direction;
A plurality of second metal wires disposed between the first metal wires;
The first metal line is disposed to be inclined at a first angle with respect to the first direction and to be inclined at a second angle with respect to the first direction. Has a second side,
The second metal line is disposed at a second angle with respect to the first direction and a third side disposed at a second angle with respect to the first direction. Has a fourth side,
The first and second metal lines are arranged in a quadrangular shape by the first side, the second side, the third side, and the fourth side,
At the intersection position of the first side, the second side, the third side, and the fourth side, the first side and the second side are connected, and the third side and the The display device is characterized in that the fourth side is arranged to be separated from the intersection of the first side and the second side.   The display device according to claim 1, wherein a region surrounded by the first metal line and the second metal line has a parallel square shape.   2. The display device according to claim 1, wherein the first side and the fourth side are arranged in parallel, and the second side and the third side are arranged in parallel.   The display device according to claim 1, wherein the first metal line is used as a detection electrode for a touch panel, and the second metal line is a dummy electrode. A third metal line extending in the first direction and arranged in parallel in the second direction;
A plurality of fourth metal wires disposed between the third metal wires;
The third metal line and the fourth metal line are disposed between the first metal line and the second metal line,
The third metal line is disposed at a second angle inclined with respect to the first direction and at a second angle inclined with respect to the first direction. Has a sixth side,
The fourth metal line is disposed at a second angle inclined with respect to the first direction and a seventh side disposed at a second angle with respect to the first direction. Has an eighth side,
The third and fourth metal lines are arranged in a quadrangular shape by the fifth side, the sixth side, the seventh side, and the eighth side,
At the intersection position of the fifth side, the sixth side, the seventh side, and the eighth side, the fifth side and the sixth side are connected, and the seventh side and the The display device according to claim 1, wherein the eighth side is arranged to be separated from an intersection of the fifth side and the sixth side. The third and fourth metal wires are dummy electrodes as electrodes for the touch panel,
6. The display device according to claim 5, wherein a straight line portion of the fifth to eighth sides has a wiring non-formation region. A display device having a touch panel metal wire on the display surface side,
A plurality of first metal wires extending in a first direction and arranged in parallel with the second direction;
A plurality of second metal wires disposed between the first metal wires;
The first metal line is disposed to be inclined at a first angle with respect to the first direction and to be inclined at a second angle with respect to the first direction. Has a second side,
The second metal line is disposed at a second angle with respect to the first direction and a third side disposed at a second angle with respect to the first direction. Has a fourth side,
The first and second metal lines are arranged in a quadrangular shape by the first side, the second side, the third side, and the fourth side,
At the intersection position of the first side and the second side, the first side and the second side are connected, and at the intersection position of the third side and the fourth side, the third side And the fourth side are connected,
The first side and the fourth side are arranged to intersect,
The second side and the third side are arranged to intersect each other,
The third side and the fourth side have a wiring non-formation region at a position intersecting the first and second sides, and the third side and the fourth side are A display device, wherein the display device is disposed apart from the first and second sides.   The display device according to claim 7, wherein a region surrounded by the first metal line and the second metal line has a parallel square shape.   The display device according to claim 7, wherein the first side and the fourth side are arranged in parallel, and the second side and the third side are arranged in parallel.   The display device according to claim 7, wherein the first metal line is used as a detection electrode for a touch panel, and the second metal line is a dummy electrode. A third metal wire group extending in the first direction and arranged in parallel with the second direction;
The third metal line group has a shape in which rectangular wiring is continuously formed in the first direction,
The display device according to claim 7, further comprising a wiring non-formation region at the rectangular intersection. The third metal wire group is disposed between the first metal wire and the second metal wire,
The display device according to claim 11, wherein the third metal line group is a dummy electrode as an electrode for a touch panel.

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